15 Best Under the Sink Bathroom Cabinet Organization

I never realized how much of a headache bathroom cabinet organization could be until I moved into my own place.

I bought a house and moved in last month, so exciting, but I quickly ran into a big problem: my master bathroom is tiny.

The cabinet under the sink is shallow, practically useless. There’s no counter space around the sink, and to top it off, there’s no medicine cabinet on the wall.

In my rental, I’d had an over‑toilet shelf that felt like a lifesaver, but here, it’s way too large for the space, and the water pipe blocks part of it, so I couldn’t even install the last piece. I felt like I’d lost my storage lifeline, and I was totally stuck trying to figure out what to do next.

Over the next few days, I started experimenting mostly out of desperation. I considered floating shelves, but I kept asking myself, “Will I hate them a few months in?”

I also toyed with the idea of cutting into the wall to make a nook next to the sink, but the thought of drilling into my brand‑new house made me pause and laugh a little nervously.

My partner suggested a tall, shallow cabinet on the left wall between the door and the towel rack, something we could walk past easily, but the walkway is narrow, and I’ve already bumped into things plenty.

In the chaos of decision‑making, I cleared out everything: I tossed makeup I haven’t used in years, extra toiletries, and duplicates of things I barely touched. Minimizing helped more than I expected.

I also tried mounting stick-on command caddies on the inside of the cabinet doors and added slim organizers under the sink.

I even installed motion‑activated tap lights to see the back of that shallow cabinet, but they got triggered more often than not, so I switched to simple stick lights instead.

Finally, things started to click. I invested in a recessed medicine cabinet over the vanity. It was a little scary to cut into the wall, but the payoff was huge.

Under the sink, I slid in slim pull-out baskets that fit just right, giving me vertical storage for cleaning supplies and backup items.

On the wall, I mounted a flat, tiered towel rack so towels stay out of the way but dry properly when popped out after a shower.

I added a small shelf above the door for toilet paper and things I don’t need every day. By being brutally honest about what I need, letting go of the rest, and using every hidden and vertical corner, I finally achieved real bathroom cabinet organization.

It didn’t happen overnight, but now my bathroom feels calm, functional, and like a space I actually enjoy using.

If you’re looking for more simple‑but-stylish inspiration, I also have an article about 16 Minimalist White and Grey Apartment Design Concepts. It’s helped me apply the same thoughtful, pared-down mindset throughout my home.

15. Clear Stackable Drawers

Use clear, stackable drawers to separate small items such as makeup, brushes, and personal care products.
Bathroom Cabinet Organization Tip: Label each drawer to quickly locate items and prevent clutter from accumulating.

14. Pull-Out Baskets

Install pull-out baskets to make deep cabinet spaces more accessible. They provide easy access to cleaning supplies or extra toilet paper.
Bathroom Cabinet Organization Tip: Line baskets with non-slip mats to prevent items from sliding when pulled out.

13. Tension Rod for Spray Bottles

Install a small tension rod under the sink to hang spray bottles vertically.
Bathroom Cabinet Organization Tip: Ensure the rod fits snugly between the cabinet walls to safely hold the weight of full bottles.

12. Tiered Shelf Organizers

Place tiered shelf organizers to increase vertical space and store taller items without stacking precariously.
Bathroom Cabinet Organization Tip: Use adjustable-height tiers for customization based on bottle and container sizes.

11. Lazy Susan Turntable

Add a small Lazy Susan to rotate and access bottles of lotions, cleaning supplies, or hair products.
Bathroom Cabinet Organization Tip: Opt for a non-slip base to prevent the turntable from moving unexpectedly.

10. Clear Plastic Bins

Group similar items in clear plastic bins for easy visibility and maintenance.
Bathroom Cabinet Organization Tip: Use bins of varying sizes to accommodate small toiletries and large cleaning bottles efficiently.

9. Over-the-Door Storage Rack

Attach an over-the-cabinet-door rack to store smaller essentials like brushes, soaps, or sponges.
Bathroom Cabinet Organization Tip: Ensure the rack does not interfere with cabinet hinges to maintain smooth operation.

8. Adjustable Drawer Dividers

Use adjustable dividers to keep drawers under the sink neatly separated.
Bathroom Cabinet Organization Tip: Regularly reassess divider placement as your stored items change to maintain optimal spacing.

7. Hanging Mesh Pockets

Install hanging mesh pockets on the interior walls of the cabinet to store small, lightweight items.
Bathroom Cabinet Organization Tip: Make sure pockets are securely attached and do not obstruct plumbing or pipes.

6. Small Caddy for Cleaning Supplies

Place a small caddy to carry cleaning sprays, sponges, and cloths in one portable unit.
Bathroom Cabinet Organization Tip: Choose a caddy with a handle to easily lift it out for use without removing all items individually.

5. Stackable Bins for Extra Towels

Use stackable bins to neatly store rolled or folded hand towels and washcloths.
Bathroom Cabinet Organization Tip: Keep frequently used towels on top for quick access and rotate older stock to the bottom.

4. Label Bottles and Containers

Label all cleaning and personal care bottles for clarity and safety.
Bathroom Cabinet Organization Tip: Use waterproof labels to ensure markings remain legible even in humid bathroom conditions.

3. Hooks for Small Tools

Attach hooks to the cabinet walls or inside doors for hair dryers, brushes, or small grooming tools.
Bathroom Cabinet Organization Tip: Place hooks away from pipes and ensure they are mounted securely to prevent accidents.

2. Sliding Trays

Use sliding trays under the sink to easily access items stored in the back.
Bathroom Cabinet Organization Tip: Ensure trays are sturdy and glide smoothly to prevent tipping or spills.

1. Modular Storage Units

Invest in modular storage units designed for under-sink spaces to maximize every inch efficiently.
Bathroom Cabinet Organization Tip: Measure the cabinet space carefully before purchasing modular units to ensure a perfect fit.

Conclusion

Organizing under the sink transforms a cluttered space into a highly functional and accessible storage area. By applying these 15 under-the-sink bathroom cabinet organization ideas and following the Bathroom Cabinet Organization Tips, we can maximize every inch of space, protect items from damage, and keep essential products easy to find. Implementing clear storage solutions, pull-out systems, and labeling ensures a tidy, efficient, and stress-free bathroom environment.